sig
  val fishead :
    ?presentation_numerator:Stdlib.Int64.t ->
    ?presentation_denominator:Stdlib.Int64.t ->
    ?basetime_numerator:Stdlib.Int64.t ->
    ?basetime_denominator:Stdlib.Int64.t ->
    ?utc:Stdlib.Int32.t -> unit -> Ogg.Stream.packet
  val eos : unit -> Ogg.Stream.packet
end